otel-collector-config.yml

receivers:
    prometheus_simple:
        collection_interval: 10s
        # the federation endpoint:
        # Read more about it here: https://prometheus.io/docs/prometheus/latest/federation/
        # You can query the federation with PromQL, encoded as part of the query string.
        endpoint: prometheus:9090
        metrics_path: /federate
        params:
            match[]: '{job="counter"}'
    otlp:
        protocols:
            grpc:
              endpoint: 0.0.0.0:4317

exporters:
    splunk_hec/metrics:
        # Splunk HTTP Event Collector token.
        token: "00000000-0000-0000-0000-0000000000000"
        # URL to a Splunk instance to send data to.
        endpoint: "https://splunk:8088/services/collector"
        # Optional Splunk source: https://docs.splunk.com/Splexicon:Source
        source: "app:metrics"
        # Optional Splunk source type: https://docs.splunk.com/Splexicon:Sourcetype
        sourcetype: "prometheus"
        # Splunk index, optional name of the Splunk index targeted.
        index: "metrics"
        # Maximum HTTP connections to use simultaneously when sending data. Defaults to 100.
        max_connections: 20
        # Whether to disable gzip compression over HTTP. Defaults to false.
        disable_compression: false
        # HTTP timeout when sending data. Defaults to 10s.
        timeout: 10s
        # Whether to skip checking the certificate of the HEC endpoint when sending data over HTTPS. Defaults to false.
        # For this demo, we use a self-signed certificate on the Splunk docker instance, so this flag is set to true.
        insecure_skip_verify: true

processors:
    batch:

extensions:
    health_check:
      endpoint: 0.0.0.0:13133
    pprof:
      endpoint: :1888
    zpages:
      endpoint: :55679

service:
    extensions: [pprof, zpages, health_check]
    pipelines:
      metrics:
        receivers: [prometheus_simple]
        processors: [batch]
        exporters: [splunk_hec/metrics]